[Milsurplus] How I Use an LM

[WA5CAB at cs.com]

R-129/U.  But it had a slightly different coverage not matching BC-779, 794 
or 1004.  Actually it was closer to the SP-400.  I had an SP-400 years ago 
and don't recall it having any miniature tubes.  When I get time, I'll check 
the manual I still have.

There was also a mod to BC-794 called MC-531.  It added crystal control to 
HFO and BFO and was nomenclatured R-270/FRR (TM 11-896 covers it).  I once 
had one of those, too.

In a message dated 10/18/2011 11:16:59 AM Central Daylight Time, 
ka2ivy at verizon.net writes: 
> C.Whitaker wrote:
> >my memories.
> >Trivia Question:  What was that receiver that was an upgrade from the 
> >BC-779, and
> >before the SP-600?  I recall running some on RTTY with a CV-31 in 
> >diversity.
> >We had some stand alone 51J's about that time.
> >73 Clete
> >========================================
> >   
> Hammarlund made the SP-400 immediately after WWII. It was a sort of 
> warmed over pre-war Super Pro, but worked fine and kept the push-pull 
> audio output, so it  sounded  good. In 1945-46, I'm sure a lot of 
> companies were struggling to convert back to civilian production, and 
> get something to offer the consumer as quickly as they could. I think it 
> used miniature tubes in the front end, it's performance on 10 meters was 
> better than most others of the time.  I don't know if it had a military 
> version, but would be surprised if it didn't.
> 
>    Bruce Gentry, KA2IVY

Robert Downs - Houston
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